Improvement in water-meters



J. W. GROAT. WATEE METER.

No. 107,000. Patented Oct. 4, 1870.

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" JOHN WARNER GROAT, or Nnw'ronu, n'.v Y,v

LettersfPatent-No. 107,900, dated october 4, 1870. p

'INIPRQVEMEN'I' lN .WATER-METERS.

The Schedule referred inrthese Letters Patent and making'paxt of the same To allfwhom lit mayconcem: f t

Be it known that I, JOHN WARNER GnoA'r, of the city, county, and State of New York, have invented a new and useful Improvement in Water-Metersjfand:

I do hereby declare that the following is a full, clear, and exact description thereof', which will enableothers skilled in the art to make and use the same, refer ence4 being had to thefacoompanyingdrawing forming part of this specilication.l Y

Myinvention relatesl to water-meters, and consists in certain improvements which will be iirst described as is used for conducting Awater i'n` buildings.. It is bored outtrue and smooth, and is to4 be intnoduced v between sections of the water-pipe, preferably in a vertical position, by a union or au elbow, O, andthe elbow I).

This latter elbow is cast with the flanges EF risingl up from itparallel with the part A of the case, fronting eachother so as to form two sides of a chamber, G, the other two sides of which I prefer to I make of doors H, hinged to ,either of the said two ilanges. A

I is theserew, which I propose to make by twisting a thin flat` plate of metal, and attaching the shafts K L for the end supports, said'iiat plate forming 'the required spiral withthe least amount of metal, and without the central shaft or core'v comlnoniy used, thereby oiering the least amount of resistance to or displacement. of the water, which I suppose will pass over the said screw'in arsoiid column divided only byA the thin plate. e

The sba'its, whichV are thicker than the plate o which the screw is for-med, may have grooves, M, to admit thelwater to passonto and leavev the plate in the most unobstructedv manner. f

I arrange this screw in a short section of tube N, just large enough to admit'it, and connect the two together, and this tube, which' is smaller than the tube A, is provided with the l1iarin outward tothe size of the `interna diameter of the Vpipev A, and the said ends arebroughtto a thin edge, ,so as to offer the least resistance to the water, which is guided by the walls o f the said ends into the` space through which thescrew passes.

Similar letters of reference indicate corresponding ends 0, swelled VThe end of the' shaft K rests in a step or bearing in a cross-bar, P, which is of the same length as the external diameter of the screw-threaded end of A, and it is provided with screw-threads corresponding with the threads of the said tube A, so that the ends being let into radial slots Q, in A, the said cross-bar will beretained in place when `the elbow o'r union G is screwed on.

The shaft L is passed through a hole, R, in the -the axis of A, around which hole is a stuiiing-box, S, for packingv the said shaft.

This shaft extends above or beyond the danges E F into a case,"l, attached to the said flanges for 'containing the lregistering gear, which may be of any C kind, and which is shown in the drawing iu dotted lines.

The doors H, opening into the chamber G, afford convenient access to the stuffing-box for tightening it,.as may be required from time to time, aud they provide ameaus of locking up the stuing-box to prevent access to it by persons not authorized, who might screw it down so hard as to prevent the spiral blade from running at the proper rate of speed.'-

metal pins, X, which may be flattened on the ends, after passing through the holes, by pinccrs or other which cannot be restored by others not having the instruments, so that unauthorized persons opening the doors to tamper with the stufing-box would be detected.

It will be seen that this construction is very simple and cheap, and the meter made thereby is small andcompact, and adapted for the most ready attachment to the water-pipes.

It may be placed either end up, or horizontally, as may be preferred, but it will work best in a vertical position. v t

The edges of the tube N, being shaped as shown, prevent/*the lodgment of dirt or vother matter ou occur if the ends were thick and fiat; they also prevent'the passage of the same between the tubcs,A and N.

the Walls of A as `thereat.

Having thus described my invention,

2liV claim as new aud desire to secure by Letters Patent- 1. The elbow D, forming part ofthe case of the waterfmeter, provided with the chamber G around the stuffing-box, the said chamber being formed by `the flanges E F, the doors H, and a case,"I-, for con,-

taini-ng the registering apparatus, substantially as to prevent the Yescape of water specified.

back of D, between the flanges E F, and in line with' Forlocking the said doors, 1 prefer to use soft Ymeans, making impressions of a peculiar character,

the end against which thewater ows, which would i The said edges are intended to t so snugly vwith 2. The cross-bar P, fitted in the slots inthe end ends O, reduced to thin edges and fitted to the said of the tube A, provided 4with the screwthreads, and tubo A, all substantially as speoified. secured by the elbow or union screwing on the-said part A, all substantially as specified. Witnesses:

3. The combination, with the spiral plate I and GEO. W. MABEE, the tube A, of the tube N, provided with the flaring T. B. Mosman.

J OHN WARNER GROAT. 

